Description

3-(But-2-Enyl)-2-Methyl-4-Oxocyclopent-2-Enyl 2,2-Dimethyl-3-(2-Methylprop-1-Enyl)Cyclopropanecarboxylate is a specialized synthetic intermediate of significant interest in advanced organic synthesis. Its complex cyclopropane and cyclopentenone structure makes it a valuable precursor for constructing intricate molecular frameworks. This compound is primarily sought by research and development laboratories and fine chemical manufacturers in the agrochemical and pharmaceutical sectors for the development of novel active ingredients.

Application

• Pharmaceutical Intermediate: Serves as a key building block in the synthesis of novel drug candidates, particularly those requiring complex, multi-cyclic core structures.
• Agrochemical Synthesis: Used in the research and production of advanced pesticides and insecticides, where the cyclopropane moiety is a common pharmacophore.
• Chemical Research & Development: Acts as a versatile scaffold in academic and industrial R&D for exploring new chemical reactions and synthesizing complex natural product analogs.
• Fine Chemical Production: Employed in the manufacture of specialty chemicals, flavors, and fragrances that require high-purity, structurally defined intermediates.
• Material Science Precursor: Investigated for the synthesis of specialized polymers or organic electronic materials with unique properties derived from its rigid molecular structure.

Basic Information

Item	Details
Product Name	3-(But-2-Enyl)-2-Methyl-4-Oxocyclopent-2-Enyl 2,2-Dimethyl-3-(2-Methylprop-1-Enyl)Cyclopropanecarboxylate
CAS No.	25402-06-6
Molecular Formula	C20H28O3
Molecular Weight	316.44 g/mol
Synonyms	Chrysanthemic acid ester derivative; 2-Methyl-4-oxo-3-(2-butenyl)-2-cyclopenten-1-yl 2,2-dimethyl-3-(2-methyl-1-propenyl)cyclopropanecarboxylate; (1R)-trans-Chrysanthemic acid (3E)-3-(but-2-en-1-yl)-2-methyl-4-oxocyclopent-2-en-1-yl ester; Pyrethroid intermediate; Cyclopropanecarboxylic acid, 2,2-dimethyl-3-(2-methyl-1-propenyl)-, 3-(2-butenyl)-2-methyl-4-oxo-2-cyclopenten-1-yl ester; Allethrin analog.
EINECS	Contact for details

Quality Control

Our 3-(But-2-Enyl)-2-Methyl-4-Oxocyclopent-2-Enyl 2,2-Dimethyl-3-(2-Methylprop-1-Enyl)Cyclopropanecarboxylate is produced under strict quality management systems. Every batch undergoes rigorous analytical testing, including chromatography and spectroscopy, to ensure identity, purity, and consistency. Certificates of Analysis (COA) documenting all critical parameters are available upon request to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (typically 15-25°C). Keep away from heat, sparks, and open flame. Due to its light-sensitive nature, containers should be opaque or stored in dark conditions.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid or low-melting solid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0% (Research Grade)
Purity (GC)	≥ 97.0% (Technical Grade)
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.